A bemused plane passenger woke up during a storm to see a strange brightly-coloured "UFO" hovering beneath the aircraft.
The man, named Mr Chang, used his phone to capture haunting footage of "a glowing line" of fire.
According to YouTube channel Secure Team 10, which tries to expose UFO sightings, the video was taken on an internal US flight from Atlanta to LA.
The passenger said he awoke during a raging thunderstorm and noticed the strange object hovering nearby.
Through the window, a thin cigar-shaped object can be seen in the sky as lightning flashes around it.